[lworld] RFR: 8273554: [lworld] Runtime tests should not explicitly set -Xint/-Xcomp

[Tobias Hartmann]

Many of the runtime tests still specify multiple runs with `-Xint`/`-Xcomp`. Setting these flags explicitly reduces coverage because flag combinations set by the CI test jobs are overridden. We should simply not set them in the tests.

Thanks,
Tobias

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Commit messages:
 - 8273554: [lworld] Runtime tests should not explicitly set -Xint/-Xcomp

Changes: https://git.openjdk.java.net/valhalla/pull/550/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=550&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273554
  Stats: 155 lines in 25 files changed: 0 ins; 91 del; 64 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/550.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/550/head:pull/550

PR: https://git.openjdk.java.net/valhalla/pull/550